Clutch transmission.



W. E. TULLAR.

. CLUTCH TRANSMISSION.

APPLICATION TILED MAR. 6,}912.

Patented Feb. 9, 1915.

4 SHEETS-EJ511131 1.

W. E. TULLAR.

CLUTCH TRANSMISSION.

APPLICATION FILED MAB. e. 1912.

Patented Feb. 9, 1915.

4 SHEETS-SHEET 2.

W. E. TULLAR.

GLUTGH TRANSMISSION. APPLICATION TILED MAR.B,1912.

Patented Feb. 9, 1915.

V mww 4 SHEETS-SHEET 3.

W. E.. TULLAR. CLUTCH TRANSMISSION.

APPLICATION FILED MAR. 6, 1912 Patented Feb. 9, 1915.

4 SHEETS-SHEET 4.

and' connections incidental to their.

i E. T'UJL, 'Olli CCACZYO, ILLINOIS.

cLuroH rnansrarssron.

riaaova.

Specification of Letters Patent.

Patented Feb. a, ram.

Application and March 6,1912. Serial to. smart.

To all whom it may concern:

Be it known that l, WILLIAM E. TULLAR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Clutch Transmission, of which the following is a specification.

My invention relates in general to clutch shifting mechanisms and more particularly to devices for this purpose commonly used on automobiles and other motor-driven vehicles where it is desirable to provide means for shifting from one set of transmission gearing to another while the parts are rotating at high velocity.

ll am aware that various forms of clutch shifting mechanisms have been constructed and employed prior to my invention but these have been merely of either the friction or positive engagement type. Where the former type has been used it hasbeen found that Where the power is continually trans mitted through the friction devices that wear of the parts has been so rapid that the eiiiciency of power transmissions so constructed has been short-lived resulting in the continued slipping and consequent loss of power. Where positive engagement has been used to convey the power from the driving to the driven'shaft utmost care'has been necessitated in the shifting from one set of transmission gearing to another to prevent stripping the gears, it having been foundnecessary to provide means to permit the parts, where such devices are used to come nearly or quite to rest before a new set may be thrown in.

An additional disadvantage of the clutch shifting mechanisms at present in use resides in the complicated system of levers use, which usually comprise an actuating lever positioned jat the side of the drivers seat, so as to prevent entrance to the front of the car on that side.

I aim to produce a device thatwill permit changing from one set of transmission gearing to another regardless of the speed of the moving parts without danger to the said parts thereby enabling the machine to be operated by drivers comparatively nexperienced in the use of a car and compara-. ti\ ely unfamiliar with the use of machinery.

A-further aim of myv invention is to promay be actuated by means ing the friction ring to the vide a clutch shifting mechanism which of a pedal and a lever attached to the steering gear, obviatmg thereby the necessity of obstructing either entrance to the front of the car as has been necessary with the devices heretofore in use.

Further purposes and advantages of my invention will be apparent as it is better understood from the following description, which taken in connection with the accompanying drawings discloses one preferred embodiment thereof.

On the drawings :-Figure 1 is a side elevation of a clutch shifting mechanism made in pursuance of my invention shown in cross section, Fig. 2 is a sectional view of the transmission clutch taken along the line --2 of Fig. 1 showing means of connectspider, F ig.,3 is a sectional view along the line 3-3 of Fig. 1, Fig. 4 is a sectional view along the line H of Fig. 1, Fig. 5 is a side elevation of the mechanism operating the various clutches shown in Fig. 1, Fig. 6 is an enlarged plan view, with a portion of the housingcut away, of a portion of the operating'mechanism shown in Fig. 5, Fig. 7 is a sectional view along the line 77' of Fig. 6, Fig. 8 is a sectional View alon the line 8-8of Fig. hand Fig. 9 is a sectional view showing a modification of the device disclosed inFig. l.

'On the drawings like characters of reference refer to similar parts throughout the various figures.

For the purpose of illustrating my invention I have provided the driving shaft 11 designed to deliver the power from the engine to which it is connected to the plurality of gears 1:2, 13 and 14 of varying diameter which are designed to impart various s eeds to the driven shaft as they are indivi ually brought into operative relation therewith,

as will be shown hereafter. The driven shaft 15 for the purposes of illustrating my invention is shown as being formed of material substantially square in cross section having the corners, rounded ofi to provide no sharp edges, although it will be obvious that the shaft may be of any desired form with slight modifications of the var ous parts to accommodate them to the deslred form of shaft.

At predetermined positions upon the shaft I have fitted the collars 16', said collars being adapted to rotate with the shaft and having an outer cylindrical bearing surface. These are preferablylocated directly beneath the gears mounted upon the driving shaft 11 and have loosely mountedthereon the rotatable members 17 which I have shown as turning freely upon the bearing rings 18 and 1-9 and the balls 20 interposed between the said rings and held in place by suitable retainers 21, although it will be obvious that the rotatable members 17 may turn directly upon the collars 16 or may be mounted thereupon in any suitable manner, it only'being necessary for the purpose of the invention that they be free to turn independently of the shaft 15. These members are provided with the collar 22 upon which is keyed gears 23 by means of the keys 24, the diameter of the gears being of suitable dimension to cause the gears each to mesh with a predetermined gear 12, 13 or 14 upon the driving shaft, the gears 23 being continually in mesh with the said gears. Each of the rotatable members 17 has attached to the collar 22 and formed integral therewith the disk 25 terminating at its outer periphery in the outwardly extending rim 26 which hasfastened thereto the inwardly extending ring 27, which for thepurpose of my invention is shown as connected thereto 'by means of a threaded engagement as at 28, it being manifest, however that any desired fastening means may beemployed.

To reverse .the movement of the driven shaft 'I have provided uponthe driving shaft the gear. 29 adapted to operate by means of an idler (not s own) ,the rotatable member 30 which is mounted upon the collar 31 upon the driven shaft -15 provided with the gear 32 cooperating with the said idler, the rotatable member 30 being identical in construction and method of mounting with the members 17.

To compel the'driven shaft 15 to rotate with a desired rotatable member I have provided the two sets 'of clutches 33 and 34 the former in number equal to the number of gears upon the driving shaft 11 and the latter in number equal to one-half the number ofrotatable members. Each of the clutches 33 is adapted to engage frictionally with a rotatable member 17 and to this end is located between the disk 25 and the ring 27. This clutch is constructed of the spider 35 which consists in the preferred form of m invention herein described of the hub 36 fixed upon the, shaft 15. The hub 36 has extending outwardly therefrom, the spokes 37, arranged in pairs, the members of each pair being parallel and of suflicient distance apart to permit the insertion therebetween of certain members as will be hereinafter disclosed. To the outer extremities of the spokes is afiixedthe rim 37 formed preferably integral therewith, the diameter of the outer periphery of the rim 37 permitting .it to rotate freely within a portion of the ring 27 in engagement with the rim 26 of ence of the spider 35 is provided with the ears 40 arranged in pairs in spaced relation as is shown in cross section in Fig. 2, each pair of said ears being adapted to be snugly fitted within and between each pair of spokes 37 of the spider. The said ears are also provided with elongated apertures adapted to receive the pins 38. The outer surface of the ring 39 is milled to form a bearing surface adapted to frictionally engage, when the ring is moved outwardly away from the spider 35, with the inner surface of the inwardly extending ring 27.

\Vhile the contact between the rings 33 and 27 is shown as falling in a single plane perpendicular to the axis of the shaft 15 it will be obvious that this frictional engagement may be established in any desired fashion and will be subject to many variations without departing from the scope of my invention.

To move any desired frictional clutch into contactwith a rotatable member to lock the latter to the shaft 15 I have pivoted upon each p'in 38 a friction dog 41, each provided with a shoulder 43 normally in contact with the inner face of the ring 33. These dogs are actuated by movement of the clutch 34 and to this end two sets of telescopic housings 44 are provided upon each of the clutches 34, one set on either side, each set comprising anumber of housings equal to the numbers of dogs upon each frictional clutch, the'said' housings fitting within a pertures provided in the clutches 34. These housings have each an ear 44 adapted to rest against the face of a, clutch 34 the said ears being secured'to the face of the clutch by means of the screws 45'. The end of each housing 45 is shaped to enter a suitable aperture in the free end of the dog, which for the purpose of my invention I have shown as being journaled in the ci'rcul r aperture 46, having the op osite edges 0 t away to permit rotation o the dog along the pins 38. The opposite end of each housing is fastenedsecurely within the clutch 34 and within each housing is mounted the expansion spring 47 extending the length of the housing. To effect more ready operation of the dogs 41 by movement of the clutch 34 I have provided-a circular channel 48 adjanine and 52, although it obviously they be, if desired, made in one piece, and is provided with the centrallyarranged circumferential channel 53 about which is loosely mounted the ring 5% adapted to be rotated readily with respect to the said clutch 34. The

clutches 34 are each provided with oppositely disposed lugs 55 adapted to enter Within the inwardly extending ring 27 on the rotatable member 17. To engage these lugs and to thus bring the rotatable member into positive cooperation with the clutch 34:, the

ring 27 is provided with a plurality of outwarolly extending lugs 56.

It is thus readily seen that each of the gears upon the driving shaft ll is always in mesh with the gear upon its corresponding rotatable member, all of said rotatable mem bers rotating continuously as, the driving shaft rotates and in speeds v 'rying in ac cordance with the ratio of the number of teeth upon the gear on the driving shaft to the teeth upon the gear keyed to the rotatable member. These members when the clutches are in inoperative position as shown in Fig. 1 turn freely upon the collars l6, permitting the shaft to remain stationary. When it is desired to connect the driven shaft 15 to the driving shaft 11 by a particul' lar set of transmission gearing, one of the clutches 34: is shifted to the right or left toward the desired set of transmission gearing. As a clutch 34: starts to move toward a rotatable member the expansion springs a! will'be compressed, forcing the dogs to ro tate about the pivots 3d, the shoulders llof the dogsmoving the ring 39 upon the frictional clutch 83 into engagement with the ring 27 on the rotatable member in which the said clutch is located. As the clutch 34:

is moved farther toward the desired rotatable member the lugs will enter within the ring 27 and effect a positive engagement with the lugs 56 on the said ring. The rotatable members 17 are arranged in having the sides upon which the rings 2 are disposed adjacent each other so that the single clutchBd may cooperate with either of a pair of rotatable members and the I clutch mounted within each member of said pair. i

When it is'desired to disconnect the shafts ll and 15 it is only necessary to move the clutch 34: once more to its normal position,

thereby withdrawing the lugs 55 from the lugs 56 and drawing the shoulder of the dogs ll away from the ring 33. To compel the ring 33 to break its frictional engagement with the ring 27 I have provided the pin 57 inserted within properly positioned ,ove

airs

apertures in the cars 40 and the dog 41, the hole within theears being slightly larger than the circumference of the pin to permit free operation of the dog and the establishment of frictional relation between the ring '33 and the ring 2?.

To impart the desired movement to the clutches 34 T have provided upon each ring 5 la pair of studs 58, projecting a sufiicient length on opposite sides of the clutches 54: to be embraced by the slot 59 at the ends of the bifurcatedrocking member 60, which in turn is movable around the short pivot shaft 61.. To an end of each of the pivot shafts 61 is attached at its center a vertical lever 62. To each end of each lever 62 is pivotally secured a link 68 bent in suitable shape to permit the ends 64: of the links to fall in substantially the same horizontal plane, and to terminate in substantial alinement when the clutches are in operative position. it is thus seen that in order to operate a clutch as hereinbefore described it is only necessary to impart a longitudinal movement to its corresponding link. To accomplish this and to permit a set of transmission gearing to be readily selected and securely fastened in operative position l have provided the controlling mechanism as is immediately hereinafter described Within a housing 65 have provided a chamber 66 within which the ends of the links are. free to move. On the bottom of said housing and adjacent its rear is positioned the transverse upwardly extending rib 67. Between this rib and a rear, wall 68 of the housing adapted to be moved transversely of the, housing is the member 69 within which is fastened the pin 70 extend ing outwardly within the housing as is shown in ig. 7.. Between the rib 67 andtrack is moved longitudinally of the housing. The free ends of the links are each provided with a slot adapted to receive an I upwardly projecting portion of the locking member 72,- all of said slots being in alinement when the clutches 3d are all in inoperative position.

The track 71 is normally retained by ill) means of the expansion sprlngs 73 behind the said alined slotsso that when all the clutches are in inoperative position the looking member 72 must rest between the ends of the links behind the said slots. 7 To move the track longitudinally of the housing I have provided the lever 74 which is shown as terminating in a pedal 75 although any convenient means of operating the said lever may be resorted to. To move the member 69 transversely of the housing I have provided the member with the arm 76, having at its end the slot 77 within which is pivotally mounted the end of a bent lever 78 and the lever 79 connected by the universal joint 80. To the end of the lever 79 is the operating handle 81 which I have shown as positioned beneath and mounted upon the steering gear of the automobile,-.although it maybe otherwise positioned if desired. The operating handle 81 is movable over an indicating segment 82 which is provided with slots 83, indicating a proper position of the handle 81 to bring a desired set of transmission gearing into cooperative relation and providing means for locking the handle in the said position. Whenit is desired to move any clutch into operative engagement with a rotatable member the pedal 75 must first be pressed forwardly from the position shown in dotted lines on Fig. 5 to that shown in full lines. This movement of the pedal carries-the track 71-toward the front of the housing, compressing the springs 73, withdrawing the pin 7 0 from an aperture in the said track alining. the locking member 72 with the slots in the ends 64 of the links. Retaining the pedal in this position the handle 81 may be unlocked and moved to the desired position 83 upon the quadrant 82, thereby moving the sliding member 69 and the locking member 72 transversely of the housing into position beneath a desired link so that the locking member is engagedin the slot of the link when upon releasing the foot pedal-75 the pin 70 enters its proper, aperture upon movement of the track 71 rearwardly of the housing, the locking member 72 carrying the link beneath the end of which it is positioned rearwardly with it as is shown in Fig. 6, the spring 73 serving to move'the end of the link 64; and to cause the pin to retain the locking member 72 with a slot in the desired link. The link64, when moved rearwardly rotates the lever 62 to which it is affixed and its rocking member 61 thereby moving the desired clutch 34: and producing as has been hereinbefore described first frictional engagement between the clutch 33 and its rotatable member, and subsequently positive engagement between the said member and the clutch 3 1. I

- In Fig. 9 a modification of my clutch shifting mechanism is disclosed. In this form the driving shaft 85 is shown as perpendicular tojthe driven shaft 86 and has mounted upon it the two beveled gears 87 and 88,.although it will be obvious that where .a greater number of speeds is desired additional beveled gears may be supplied.

In the form I have shown in Fig. 9 two speeds forward and one reversed are disclosed.' The beveled gears 87 and 88 are secured upon the shaft 85 in any suitable manner. Upon the shaft 86 adapted to turn freely thereon are the beveled gears 89, 90 and 91. In the preferred embodimentof my invention these gears are shown as constituting the outer rim 92 which is fastened upon the loosely mounted rotatable member 93 by means of the screws 94, although it will be obvious that it may be made integral therewith. The gears 89, 90 and 91 are each provided with the inwardly extending integral ring 95, embracing between it and the rotatable member proper the frictional clutch 96 which is provided with a ring 97 adapted to bear against the inner face of the-inwardly disposed ring of the rotatable member. The ring 97 is connected to a hub 98 upon the shaft 86 by means of the spokes 99. To move the ring 97 into contact with the ring 95 a plurality of dogs 100 are pivotally mounted by means of the pins 101. Between the rotatable members 93 hearing the gears 89 and 90 is mounted a positively actuating clutch 102. This clutch is provided with a plurality of apertures extending therethrough in number equal to the number of dogs upon a single, frictional clutch. Through each aperture is positioned a pin or rod 103, each of said pins having an end in contact with a dog upon each of the said rotatable members. This contact I have shown as preferably established by forming the rod 103 of proper length and inserting the ends of the rod within a receiving socket at the free ends of the said dogs. Between the said free ends of the dogs and the clutch 102 are positioned a plurality of expansion springs 104: coiled about the said pins having one end bearing against the end of the dog and the other 'end against the clutch, preferably within a recess provided for the purpose. The rotatable members and the clutch 34 are provided with the lugs as hereinbefore described in connection with the form of the invention-shown in Fig. l, and the operation of the frictional and positivelyactuating clutch is analogous with the devices described in connection therewith, the moveinent of the clutch, however, being accomplished by means of the lever 105, which is pivotally mounted in the housing as at 106, the said lever terminating in a yoke having a member disposed upon each side of the said clutch, the ends of the said yoke being provided with lugs 107 projecting inwardly into the annular slot 108 upon the clutch 102. When the lever is rotated about the bearing 106 in either direction it will be seen that the clutch 102 is moved toward a rotatable member producing'fi'rst a frictional engagement by the action of the niaaove spring upon the dogs 100 and'later a positive engagement between the lugs on the clutch 102 and the lugs upon the ring 95. This lever 105 may be actuated by providing at the point about which it rotates the I pivot shaft (51 and attaching thereto the opclutch 96 whose form has been hereinbefore described and a positively actuating clutch 109 of construction similar to the positively actuating clutch 102 hereinbefore described with this exception: the aperture to receive the rods 103 is not continued through the said clutch, the rods being of a length suitable to extend merely between the aperture within the dogs and a similar aperture within the clutch as is shown at 110.

It will be manifest that where a clutch shifting mechanism made in pursuance of my invention is employed that the danger of stripping the gears usually attendant upon the clutch shifting mechanisms in use when the same are employed in connection with the changing from one set of transmission gearing to another while the parts are rorating at high velocity is obviated in that the partr are first brought into frictional engagement and the movement of inertia is overcome thereby, causing all parts to be moving in the desired speed before a positive engagement between the said parts is established. I have provided a device for this purpose which is simple in construction, eflicient in operation and which has attendant upon it none of the disadvantages hereinbefore experienced inconnection with devices of this kind at present in use.

\Vhile I deem my device particularly applicable to automobiles and other motordriven vehicles, it will be obvious that with slight modification it may be adapted to be used in connection with any and all transmission gearing wherein it is desired to throw in a set of .transmission gearing or to change from one set to another while the parts are operating at a high velocity.

It will be manifest. moreover, while I have shown two embodiments of my invention, various changes in the details of construction, the arrangement of the parts, the number of sets of transmission gearing to be. employed as well as various means of actuating the clutches may be resorted to without departing from the spirit or scope of my invention, or sacrificing any of its benefits, the forms herein disclosed being merely preferred embodiments thereof.

I claim 1. In a clutch transmission, the combination of a driving element, a driven element, frictional engaging means and positive engaging means mounted on one of said elements, said frictional and positive engaging means being movable longitudinally of said element, a member connected with the other of said elements interposed between said frictional and positive engaging means and held against movement longitudinally of said elements, and means for-successively moving said frictional. and positive engaging means into engagement with said mem ber whereby first frictional and subse" quently positive engagement is established between the elements.

In a clutch transmission, the combinationv of a driving element, a driven element, frictional engaging means and positive engaging means mounted on one of saidelements, :1 member interposed between said means, and connections between the said means for moving them toward each other and into engagement with said member, the movement of said frictional engaging means being less than the movement of said positive engaging means whereby first frictional and subsequently positive engagement is established between the elements when the mechanism is operated.

3. In a clutch transmission, the combination of a driving element, a driven element, frictional engaging means and positive engaging means mounted on one of said elements, a member interposed between said means, and yielding connections between the said means for moving them toward each other and into engagement with said member, the movement of said frictional engaging means being less than the movement 'of said positive engaging means whereby first frictional and subsequently positive engagement is established between the elements when the mechanism is operated.

4. in a clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one of said elements, said rotatable member comprising a hub adapted to turn loosely about the said element, a rim about the periphery of the said rotatable member, means connecting the said rim to the said hub at one side of the said rim, an annular inwardly extendinglip atthe other side thereof, frictional engaging means mounted on an element within the said rotatable member, positive cnga gin g means mounted on the element with the said rotatable member and adapted to engage said lip, means connecting the said frictional and positive engaging means, and means actuating the said positive engaging means, whereby first frictional and subsequently positive engagement between the said elements is established.

5. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one of said elements, said member comprising a hub adapted to turn loosely about the said element, a fiat rim extending beyond the said hub, an annular inwardly depending ring secured to the edge of the said rim, means connecting the said rim to the hub, frictional engaging means mounted on the element with the rotatable member adapted to engage frictionally the said ring, positive engaging means mounted on the same element adapted to positively engage the said ring, means connecting the said frictional and positive engaging means, and means actuating the said positive engaging means, whereby first frictional and subsequently positive engagement between the said elements is established.

6. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one of said elements, said member comprising a hub adapted to turn loosely on the said element, a rim disposed aboutthe periphery of the said member and extending beyond the hub,

an annular inwardly depending ring seowed to the outwardly extending extremity of the said rim, means connecting the said rim to the hub, and means mounted on the said hub to coiiperate with the other element, frictional engaging -means mounted on the element-adapted to frictionally engage the inner face of the said ring, positive engaging means adapted to positively engage with the said ring, means connecting the said frictional and positive engaging means, and means actuating the said positive engaging means, whereby first frictional and subsequently positive engagement between the said elements is established.

7. In a clutch transmission, the combination of a driving element, a vdriven element. a rotatable member mounted on one of said elements, said member comprising a hub adapted to turn loosely on the said element, a rim disposed about the periphery of the said element and extending beyond the hub, an annular inwardly depending ring secured to the outwardly extending extremity of the said rim, said rim being provided with a plurality of inwardly extending lugs, means connecting the said rim to the hub, and means mounted on the said hub to cooperate with the other element, frictional engaging means mounted on the element adapted to frictionally engage with the .inner face of the said ring, positive engaging means adapted to positively engage the lugs on the said ring, means connecting the said frictional and positive engaging means, and means actuating the said positive engaging means, whereby first frictional and subsequently positive engagement between the said elements is established.

8. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one element in cooperation with the other element, frictional engaging means mounted on the said element and within the said rotatable member, said frictional engaging means comprising a spider secured to the said element, a ring secured to the said spider and movable longitudinally of the axis of the spider, positive engaging means mounted on the said element, means yieldingly connecting the said positive engaging means to the said ring adapted to move the said ring longitudinally of the saidv element, means on said rotatable member cooperating with said positive engaging means, and means actuating the said positive engaging means, whereby first frictional and subsequently positive engagement between the said elements is established.

9. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member loosely mounted on one of said elements coiiperating with the other element. frictional engaging means located. within the said rotatable member, said frictional engaging means comprising a spider secured to the said element, a ring provided with a bearing surface secured to the said spider and movable longitudinally of the axis of the said spider, means connecting the said ring to the said spider adapted to move the said ring into frictional engagement with the said rotatable member, positive engaging means mounted on the element with the rotatable member, means on said rotatable member cooperating with said positive engaging means, a yielding connection between the said positive engaging means and the means actuating the said ring, and means actuating the said positive engaging means, whereby first the said ring-engages frictionally with the said rotatable member and subsequently the said positive engaging means engages positively with the said member.

10. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member loosely mounted on one ofsaid element-s cooperating with the other element, frictional engaging means located within the said rotatable member, said frictional engaging means comprising a spider secured to the said element, a ring provided with a bearing surface secured to the said I i ea-ere spider and movable longitudinally of the axis of the said spider, oscillatory means connecting the said ring to the said spider; adapted to move the said ring into frictional engagement with the said rotatable member, positive engaging means mounted on the element with the rotatable member, means connecting the said positive engaging means with themeans actuating the said ring, means on said rotatable member cooperating with said positive engaging means, and means actuating the said positive engaging means, whereby first the said. ring engages frictionally with the said rotatable member and subsequently the said positiveen aging means engages positively with the sai member. s I 11. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member loosely mounted on one 01 said elements coiiperating with theother element, frictional engaging means located within the said rotatable member, said fricti nal engaging means comprising a spider SCHUIQd to the said element, a ring having a bearing surface adapted to engage the sat d rotatable member and provided with a plurality of cars, a plurality oi means connecting said ears to the said spider, a plurality of rotatable arms .mounted on said connecting means adapted to move the said ring into frictional engagement with the said rotatable member, positive engaging means mounted on thesaid element, means connecting the said positive and frictional engaging means adapted to rotate the means actuating the said ring, means on said r0} tatzble member cooperating with said positive engaging means, and means actuating the said positive engaging means, whereby firs; the said ring engages frictionally with the said rotatable member and subsequently the said positive engaging means engages positively with the said member.

12. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member loosely mounted on one of said elements coiiperatirlg with the other element, frictional engaging means located within the said rotatable member, said frictional engaging means comprising a spider secured to the said element, a ring having a bearing surface adapted to engage the said rotatable member and provided with a plurality of ears, a plurality of means connecting said ears to the said spider, a plurality of oscillatory members mounted on said connecting means adapted to move the said ring into frictional engagement with the said oscillatory member, means connecting the said rotatable members and the sai ears adapted to break the frictional engage ment, positive engaging means mounted on the said element, means connecting the said tive engaging means, whereby first the said ring engages frictionally with the said rotatable member and subsequently the said positive engaging means engages positively with the said member.

.13. in a clutch transmission, the combination of a driving element, a driven element, a rotatable member loosely mounted on one of said elements cotiperating with the other element, frictional engaging means located within the said rotatable member, said frictional engaging means comprising a spider secured to the said element, a ring having a bearing surface adapted to engage the said rotatable member and provided with a plurality of ears, a plurality of means connecting said ears to the said spider, a plurality of oscillatory camsmo-unted on said connecting means adapted to movethe said ring into frictional engagement with the" said rotatable member, positive engaging means mounted on the said element, means connecting the said positive and frictional engaging means adapted to oscillate the means actuating the said ring, means on said rotatable member coiiperating with said means engages positively with the said member.

14.. Ina clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one of said elements and having lugs extending inwardly toward the axis of said element, positive engaging means mounted on said element and provided with lugs adapted to engage behind the inwardly extending lugs on the rotatable member, frictional engaging means carried by said element, andmeans for moving said frictional engaging means into frictional engagement with said rotatable element prior to the engagement of the lugs on said member and on said positive engaging means.

15. In a clutch transmission, the combination of a driving element, a driven element, a rotatable member mounted on one of said elements and having lugs extending inwardly toward the axis of said element, positive engaging means mounted on said element movable longitudinally of said element and provided with lugs adapted to engage behind the inwardly extending lugs on the rotatable member, frictional engaging means carried by said element, and

means for moving said frictional engaging means into frictional engagement with said rotatable element prior to the engagement of the lugs on said member and on said oositive engaging means.

16. In a clutch transmission, the combination of. a driving element, a driven elenent, a rotatable member mounted on one of said elements in cooperation with the other, frictional engaging means located within a rotatable member, said frictional engaging means being provided with a bearing ring adapted to be moved longitudin'ally of the axis of the said element, a pivotally mounted cam connecting the said ring to the said frictional engaging means, a positive engaging means mounted upon the same element, means connecting the said positive and frictional engaging means, said means comprising an expansion spring connected at one end to the-said positive engaging means and at the other end to the said cam of'the frictional engaging means, means I in said rotatable member for cooperating with said positive engaging means, and means actuating the said positive engaging means, whereby first frictional engagement is produced by action of the spring against the cam-and subsequently positive engagement between the said rotatable member and the positive engaging means. 7

17. In a clutch transmission, the combination of a driving mechanism, a driven mechanism, a device transmitting power from the driving to the driven mechanism and means-for actuating the said device, said means comprising a member adapted to move the said device into operative relation with the said mechanisms, an element adapted to engage with and actuate said member, means'engagin'g and disengaging the element with the said member, and means for actuating and locking said element in engaged and disengaged relation with the said member.

18. In aclutch transmission, the. combination of a driving mechanism, a driven mechanism, a device transmitting power from the driving to the driven mechanism and means for actuating the said device, said means comprising a member adapted to move the said device into operative relation with the saidmechanisms, an element adapted to engage with and actuate said member, means for actuating and engaging and disengaging the element with the said member, andmeans yieldingly locking said element in engaged and'disengaged relation with the said member.

19..In a clutch transmission, the combination of a driving mechanism, a driven mechanism, a device transmitting power from the driving to the driven mechanism and means for actuating the said device,

combidriven power from the driving to the-driven mechanism and means for actuating the said device, said means comprising a member adapted to move the said device into operative relation with the said mechanisms, an element adapted to engage with and actuate said member, a locking bar, a spring normally yieldingly moving the locking bar to lock the said element in and out of engagement with the said member and to actuate said member, means for retracting the said spring to permit the element to be engaged and disengaged with the said member, and means engaging and disengaging said element while the spring is thus retracted.

21. In a clutch transmission, the combination of a driving mechanism, a driven mechanism, a rotatable member mounted on one of said mechanisms, frictional engaging means mounted upon saidmechanism and within the said rotatable member, positive engaging means mounted upon the same mechanism and without the said memher, a yielding connection between said means adapted upon movement of the positively actuating means to move the said means toward each other into successive engagement with the said rotatable member whereby first frictional and subsequently positive engagement is established between the said mechanisms.

WILLIAM E. 'IULLAR.

Witnesses i C. V. Bnowx, C. ALDEN. 

